Copper ( / ˈ k ɒ p ər / KOP-ər) is a chemical element with the symbol Cu (from Latin: cuprum) and atomic number 29. It is a ductile metal with very high thermal and electrical conductivity. Pure copper is soft and malleable; an exposed surface has a reddish-orange tarnish. It is used as a conductor of heat and electricity, a building material, and a constituent of various metal alloys.

The metal and its alloys have been used for thousands of years. In the Roman era, copper was principally mined on Cyprus, hence the origin of the name of the metal as сyprium (metal of Cyprus), later shortened to сuprum. Its compounds are commonly encountered as copper(II) salts, which often impart blue or green colors to minerals such as turquoise and have been widely used historically as pigments. Architectural structures built with copper corrode to give green verdigris (or patina). Decorative art prominently features copper, both by itself and as part of pigments.

Copper(II) ions are water-soluble, where they function at low concentration as bacteriostatic substances, fungicides, and wood preservatives. In sufficient amounts, they are poisonous to higher organisms; at lower concentrations it is an essential trace nutrient to all higher plant and animal life. The main areas where copper is found in animals are tissues, liver, muscle and bone.

Noun

copper (countable and uncountable; plural coppers)

1. (uncountable) a reddish-brown, malleable, ductile metallic element with high electrical and thermal conductivity, symbol Cu, and atomic number 29.
2. (countable) Something made of copper.
3. The reddish-brown colour/color of copper.

   copper colour:

4. (countable) A copper coin.
5. (Australian, UK) (archaic) A large pot used for heating water or washing clothes over a fire.

   Mum would heat the water in a copper in the kitchen and transfer it to the tin bath.

   I explain that socks can’t be boiled up in the copper with the sheets and towels or they shrink.

Synonyms

• (colour): chestnut, russet

Matching Results for Copper:

The Fox and the Hound
In the film, the film's protagonists, Tod and Copper, meet when young and become friends. ... (Big Mama explains to Tod that Copper will come back a fully trained hunting dog. ...

The Fox and the Hound 2
(to Copper) You couldn't find a rabbit at a petting zoo on Easter Sunday. ... Copper: (hearing the Singin' Strays rehearsing) There's that sound again. ...

Evelyn Waugh
Lord Copper, proprietor of the Daily Beast is a man to whom one never says 'No' directly. ... Lord Copper quite often gave banquets; it would be an understatement ...

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www.organicburials.com/urllist.txt

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Business: Hospitality: Food Service: Tools and ...
Cookware Retinning & Copper Repair - Retinning and repair of copper-based cookware DMO Service - Provides parts, service, supplies and ...

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Arts: Visual Arts: Sculpture: Sculptors: Metals ...
Kappel, Dick - Wildlife, androgynous human figures, and Southwestern images in welded steel, bronze, copper, and iron. Kneehigh ...

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Arts: Crafts: Metal Craft: Blacksmithing: Smithies
Rocio Heredia, Artist Metalsmith - Specializing in traditional metalsmithing techniques of chasing and repousse in high relief on silver, copper, gold and tin.